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Finding the Fourth Proportional to 2,788.75, 4,183.74 and 914.71

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Solution

The fourth proportional to 2,788.75, 4,183.74 and 914.71 is: 1,372.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788.75 : 4,183.74 = 914.71 : x
  2. Step 2: Convert to fraction form
    2,788.75/4,183.74 = 914.71/x
  3. Step 3: Cross multiply
    2,788.75x = 4,183.74 × 914.71
  4. Step 4: Simplify right side
    2,788.75x = 3,826,908.82
  5. Step 5: Solve for x
    x = 3,826,908.82/2,788.75
  6. Step 6: Final answer
    x = 1,372.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.